Why Portland is different
A Portland business can face the Portland Business License Tax, Multnomah County Business Income Tax, Metro SHS business tax and Oregon CAT — four returns, four bases, three different apportionment percentages on the same profit.
Restaurants and independent retail along the commercial corridors need food, labor and prime cost by period, not a profit figure at year end. That is a chart of accounts question before it is a bookkeeping question.
The city generally requires businesses to register regardless of whether tax is owed, and small businesses under the exemption threshold usually still have a filing obligation to claim it.
Which tax jurisdictions apply here
- Inside the Metro district, so Metro SHS applies to income above $128,000 single / $205,000 joint.
- Inside Multnomah County, so Preschool for All applies above $125,000 single / $200,000 joint.
- Inside the City of Portland, so the Arts Tax applies at $35 per qualifying adult.
- Portland Business License Tax and Multnomah County Business Income Tax apply to businesses operating here — see Portland business taxes.
- Inside the TriMet district, so the TriMet self-employment tax reaches self-employed people working here — see transit taxes.
What bookkeeping includes
Monthly books, catch-up cleanup and QuickBooks setup — run by a bookkeeper with 25+ years behind her.
Working with us
Bookkeeping for Portland, OR
Fifteen to twenty-five minutes from our Clackamas office depending on which side of the river you are on, and most Portland clients work with us remotely in any case.
How we run bookkeepingThe tax rules specific to this area are on the Portland, OR page.
Questions from Portland
Do I owe both Metro SHS and Preschool for All?
If you live in the City of Portland and your income is above both thresholds, yes — they are separate taxes with separate calculations. Portland sits inside both the Metro district and Multnomah County.
I live in Portland but work in Vancouver. Does that help?
Not for Oregon tax. Oregon taxes residents on worldwide income and Washington levies no wage tax, so there is nothing to credit. Your local taxes follow your Portland residency regardless of where you work.
My address says Portland but I am not sure I am in the city.
Common, particularly in unincorporated Multnomah County and near the Washington County line. A Portland mailing address is not the same as being inside city limits. Use the official address lookup — it changes whether you owe the Arts Tax.
Bookkeeping in Portland
Call 503-785-3200 or schedule an appointment. We will tell you what your situation actually needs before any work starts.
Written by
Bookkeeper, 25+ years
Katie has kept books for small businesses for more than 25 years — QuickBooks, payroll, AP, AR, reconciliations and monthly reporting.
Reviewed by
Heather Perkins
Enrolled Agent, Oregon Licensed Tax Consultant
Last reviewed
This page is general information about Oregon, Washington and federal tax rules, not advice about your own return. Thresholds and rates change every year. Figures were verified as of August 2026 — check the linked official sources, or talk to us about your situation.